from pydantic import BaseModel, Field


class Ingredient(BaseModel):
    name: str = Field(..., max_length=100)
    quantity: float = Field(..., gt=0)
    unit: str = Field(..., max_length=50)


class Preferences(BaseModel):
    servings: int = Field(2, ge=1, le=20)
    maxTimeMinutes: int = Field(60, ge=5, le=300)
    difficulty: str = Field("facile", max_length=50)
    diet: str = Field("nessuna", max_length=100)
    allergies: list[str] = Field(default_factory=list)
    avoid: list[str] = Field(default_factory=list)
    tools: list[str] = Field(default_factory=list)


class RecipeRequest(BaseModel):
    ingredients: list[Ingredient] = Field(..., min_length=1, max_length=30)
    preferences: Preferences = Field(default_factory=Preferences)


class Recipe(BaseModel):
    title: str
    servings: int
    timeMinutes: int
    difficulty: str
    whyThisRecipe: str
    usedIngredients: list[str]
    optionalMissingIngredients: list[str]
    steps: list[str]
    notes: list[str]


class RecipeResponse(BaseModel):
    recipes: list[Recipe]